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    J Biol Chem. 1997 May 9;272(19):12492-4.

    Interaction of the DF3/MUC1 breast carcinoma-associated antigen and beta-catenin in cell adhesion.

    Yamamoto M, Bharti A, Li Y, Kufe D.

    Source

    Division of Cancer Pharmacology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA.

    Abstract

    The DF3/MUC1 mucin-like glycoprotein is aberrantly overexpressed in human breast carcinomas. The functional role of DF3 is unknown. The present studies demonstrate that DF3 associates with beta-catenin. Similar findings have been obtained for gamma-catenin but not alpha-catenin. DF3, like E-cadherin and the adenomatous polyposis coli gene product, contains an SXXXXXSSL site that is responsible for direct binding to beta-catenin. The results further demonstrate that interaction of DF3 and beta-catenin is dependent on cell adhesion. These findings and the role of beta-catenin in cell signaling support a role for DF3 in the adhesion of epithelial cells.

    PMID:
    9139698
    [PubMed - indexed for MEDLINE]
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